Portion of a shoe sole



FIG. 1 is a front perspective view of a portion of a shoe sole showingmy new design;

FIG. 2 is a rear perspective view thereof; and,

FIG. 3 is a plan view thereof.

The uneven broken line showing of the remainder of the shoe is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for a portion of a shoe sole, as shown anddescribed.